Bobbin for use with a magnetic core



FIG. 1 is a front elevational view of a bobbin for use with a magnetic core showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a front and upper left perspective view thereof shown on an enlarged scale with two magnetic cores. A broken line showing of the magnetic cores is included for the purpose of illustrating environmental elements only and forms no part of the claimed design; and,

FIG. 8 is a rear and lower left perspective view thereof shown on a still larger scale. 

The ornamental design for a bobbin for use with a magnetic core, as shown and described. 